Symbol. Parameter. Value. Unit. VCBO. Collector-Emitter Voltage (IE = 0). V. VCEO. Collector-Emitter Voltage (IB = 0). V. VEBO. Emitter-Base Voltage (IC. SMBT A. 1. Oct NPN Silicon Switching Transistor. • High DC current gain: mA to mA. • Low collector-emitter saturation voltage. Datasheet contains the design specifications for product development. Datasheet contains preliminary data; supplementary data will be.

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This page was last edited on 25 Octoberat I have used a base voltage of 5V and a value of 1K as current limiting resistor. The Base-Emitter voltage of this transistor is 6V so you just have to supply this voltage across 2222x base and emitter of the transistor to induce a base current into the transistor. Single transistors are also available in several different surface mount packages, and a number of manufacturers market surface mount packages that incorporate several 2Ntype transistors in one package as an array of transistors.

It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: Most 2Ns have the orientation which your diagram shows, where if the flat side is facing you, the pins are E-B-C respectively. Since its initial product launch by Motorola at the IRE Convention, daatsheet 2N has become the most widely used and universally recognized transistor of daasheet time.

Graf and William Sheets It is frequently used as a small-signal transistor, [4] [5] and it remains a small general purpose transistor [6] of enduring popularity. This is the picture of datasheet datasheet for the pins: TL — Programmable Reference Voltage. Applications Can be used to switch high current upto mA loads It can also be used in the various switching applications. By using this site, you agree to the Terms of Use and Privacy Policy.


Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. So if you looking for an NPN transistor that could switch loads of higher current then 2NA might the right choice for your project.

Archived from the original on 14 April In other projects Wikimedia Commons. It looks like a “diode”. Billions of units have been manufactured over the past 45 years and there is continuing high volume annual production.

Replacements for the 2N are commonly available now in the cheaper TO packaging, where it is known as the PN or P2N, which has similar specifications except for the lower maximum collector current. Hence the 2N pin-out is sadly not standardized.

Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting. The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume more than mA using this transistor.

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To confirm, you can double check with the hFE function if your meter has that. I have a simple circuit datashwet send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:. It was originally made in the TO metal can as shown in the picture.

The 2N is considered a very common transistor, [1] [2] [3] and is used as an exemplar of an NPN transistor. Views Read Edit View history.

Zuofu 3, 2 15 This is true of almost all modern transistors a few are made more symmetrical.

No other pin will show that. This is 22222a pic of the transistor, as I understand that it should work, but it doesn’t it is always ‘on’ with 12V between the collector and the emitter with the base floating. Other part numbers will have different parameters.


The 2N is an NPN transistor that can only switch one-third the current of the 2N but has otherwise similar characteristics. High frequency and microwave engineering. The hFE is usually much higher when properly connected than when collector and emitter are swapped.

Try not to touch the transistor while testing it because temperature will change the voltage readings. How to use 2NA This transistor like all can be used either as a switch or as an amplifier. With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased.

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Junkbots, bugbots, and bots on wheels: I am trying to figure out what is going on here. Spehro Pefhany k 4 Therefore, it is important to refer to the datasheet for the 222a2 part number and manufacturer.

However one important thing to notice is the Base resistor a. Note that the motor here draws about mA from the 12V power source, since the 2N has datashedt current rating upto mA this circuit is possible had it been a BC the transistor should have been burnt. The JEDEC registration of a device number ensures particular rated values will be met by all parts offered under that number. In actual circuit modifications might be required.

Use dmy dates from July Commons category link is on Wikidata. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and 2222x.

You can have up to 3 types of configurations.